For owners prior to 2004, remember to factor out anything related to the RWD and VVT drivetrain package. Significant emissions and calibration differences: Read the opening 3 sentences and figure just how much of the article applies to FWD engines....................

Nice article. Worthy of personal archive. Thanks.

Ranger

10-01-10, 09:57 PM

That article was dates Oct 2002. :hmm: I didn't even think this engine was on the drawing board at that time.

That VVT sounds incredibly complicated.

Submariner409

10-01-10, 10:02 PM

That article was dates Oct 2002. :hmm: I didn't even think this engine was on the drawing board at that time.

That VVT sounds incredibly complicated.

This FWD/RWD VVT engine was on the board in 2001.5......remember the rumors of a Northstar V-12?

A few articles also quietly say that the later (supercharged) Northstar was reduced from 4.6L to 4.4L by reducing cylinder bore to increase head gasket sealing surface. Ring a bell for anyone ?

Ranger

10-01-10, 10:32 PM

I vaguely remember rumors of a V12.

RippyPartsDept

10-01-10, 11:27 PM

http://blog.niot.net/blog-images/02_Sep/cadillac-shelves-that-whole-v12-thing.jpg
this one?

for these cars?
http://2.bp.blogspot.com/_ewpEPV7ANWI/TFMGXeGr6_I/AAAAAAAAa6M/Qt4lf9VrzZU/s1600/Cadillac-Sixteen-Concept-p.jpg
http://www.seriouswheels.com/pics-abc/Cadillac-Cien-Pillars.jpg

98eldo32v

10-02-10, 06:53 AM

The VVT system, in my opinion "looks" a lot like Toyota/Lexus technology. The reason I know is because I used to be a parts counterman for Lexus & Toyota for many years. Who's to say who developed it first is another story. I know it was on a few of their models. Toyota called it VVti. The "I" stood for intelligence...